| // Copyright (C) 2009 The Android Open Source Project |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| package com.google.gerrit.server.account; |
| |
| import static com.google.gerrit.server.account.externalids.ExternalId.SCHEME_USERNAME; |
| |
| import com.google.common.cache.CacheLoader; |
| import com.google.common.cache.LoadingCache; |
| import com.google.common.collect.ImmutableMap; |
| import com.google.common.flogger.FluentLogger; |
| import com.google.gerrit.common.Nullable; |
| import com.google.gerrit.reviewdb.client.Account; |
| import com.google.gerrit.server.FanOutExecutor; |
| import com.google.gerrit.server.account.externalids.ExternalId; |
| import com.google.gerrit.server.account.externalids.ExternalIds; |
| import com.google.gerrit.server.cache.CacheModule; |
| import com.google.gerrit.server.config.AllUsersName; |
| import com.google.gerrit.server.logging.TraceContext; |
| import com.google.gerrit.server.logging.TraceContext.TraceTimer; |
| import com.google.gerrit.server.util.time.TimeUtil; |
| import com.google.inject.Inject; |
| import com.google.inject.Module; |
| import com.google.inject.Singleton; |
| import com.google.inject.TypeLiteral; |
| import com.google.inject.name.Named; |
| import java.io.IOException; |
| import java.util.ArrayList; |
| import java.util.HashMap; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.Optional; |
| import java.util.Set; |
| import java.util.concurrent.Callable; |
| import java.util.concurrent.ExecutionException; |
| import java.util.concurrent.ExecutorService; |
| import java.util.concurrent.Future; |
| import org.eclipse.jgit.errors.ConfigInvalidException; |
| |
| /** Caches important (but small) account state to avoid database hits. */ |
| @Singleton |
| public class AccountCacheImpl implements AccountCache { |
| private static final FluentLogger logger = FluentLogger.forEnclosingClass(); |
| |
| private static final String BYID_NAME = "accounts"; |
| |
| public static Module module() { |
| return new CacheModule() { |
| @Override |
| protected void configure() { |
| cache(BYID_NAME, Account.Id.class, new TypeLiteral<Optional<AccountState>>() {}) |
| .loader(ByIdLoader.class); |
| |
| bind(AccountCacheImpl.class); |
| bind(AccountCache.class).to(AccountCacheImpl.class); |
| } |
| }; |
| } |
| |
| private final AllUsersName allUsersName; |
| private final ExternalIds externalIds; |
| private final LoadingCache<Account.Id, Optional<AccountState>> byId; |
| private final ExecutorService executor; |
| |
| @Inject |
| AccountCacheImpl( |
| AllUsersName allUsersName, |
| ExternalIds externalIds, |
| @Named(BYID_NAME) LoadingCache<Account.Id, Optional<AccountState>> byId, |
| @FanOutExecutor ExecutorService executor) { |
| this.allUsersName = allUsersName; |
| this.externalIds = externalIds; |
| this.byId = byId; |
| this.executor = executor; |
| } |
| |
| @Override |
| public AccountState getEvenIfMissing(Account.Id accountId) { |
| try { |
| return byId.get(accountId).orElse(missing(accountId)); |
| } catch (ExecutionException e) { |
| logger.atWarning().withCause(e).log("Cannot load AccountState for %s", accountId); |
| return missing(accountId); |
| } |
| } |
| |
| @Override |
| public Optional<AccountState> get(Account.Id accountId) { |
| try { |
| return byId.get(accountId); |
| } catch (ExecutionException e) { |
| logger.atWarning().withCause(e).log("Cannot load AccountState for ID %s", accountId); |
| return Optional.empty(); |
| } |
| } |
| |
| @Override |
| public Map<Account.Id, AccountState> get(Set<Account.Id> accountIds) { |
| Map<Account.Id, AccountState> accountStates = new HashMap<>(accountIds.size()); |
| List<Callable<Optional<AccountState>>> callables = new ArrayList<>(); |
| for (Account.Id accountId : accountIds) { |
| Optional<AccountState> state = byId.getIfPresent(accountId); |
| if (state != null) { |
| // The value is in-memory, so we just get the state |
| state.ifPresent(s -> accountStates.put(accountId, s)); |
| } else { |
| // Queue up a callable so that we can load accounts in parallel |
| callables.add(() -> get(accountId)); |
| } |
| } |
| if (callables.isEmpty()) { |
| return accountStates; |
| } |
| |
| List<Future<Optional<AccountState>>> futures; |
| try { |
| futures = executor.invokeAll(callables); |
| } catch (InterruptedException e) { |
| logger.atSevere().withCause(e).log("Cannot load AccountStates"); |
| return ImmutableMap.of(); |
| } |
| for (Future<Optional<AccountState>> f : futures) { |
| try { |
| f.get().ifPresent(s -> accountStates.put(s.getAccount().getId(), s)); |
| } catch (InterruptedException | ExecutionException e) { |
| logger.atSevere().withCause(e).log("Cannot load AccountState"); |
| } |
| } |
| return accountStates; |
| } |
| |
| @Override |
| public Optional<AccountState> getByUsername(String username) { |
| try { |
| return externalIds |
| .get(ExternalId.Key.create(SCHEME_USERNAME, username)) |
| .map(e -> get(e.accountId())) |
| .orElseGet(Optional::empty); |
| } catch (IOException | ConfigInvalidException e) { |
| logger.atWarning().withCause(e).log("Cannot load AccountState for username %s", username); |
| return Optional.empty(); |
| } |
| } |
| |
| @Override |
| public void evict(@Nullable Account.Id accountId) { |
| if (accountId != null) { |
| logger.atFine().log("Evict account %d", accountId.get()); |
| byId.invalidate(accountId); |
| } |
| } |
| |
| @Override |
| public void evictAll() { |
| logger.atFine().log("Evict all accounts"); |
| byId.invalidateAll(); |
| } |
| |
| private AccountState missing(Account.Id accountId) { |
| Account account = new Account(accountId, TimeUtil.nowTs()); |
| account.setActive(false); |
| return AccountState.forAccount(allUsersName, account); |
| } |
| |
| static class ByIdLoader extends CacheLoader<Account.Id, Optional<AccountState>> { |
| private final Accounts accounts; |
| |
| @Inject |
| ByIdLoader(Accounts accounts) { |
| this.accounts = accounts; |
| } |
| |
| @Override |
| public Optional<AccountState> load(Account.Id who) throws Exception { |
| try (TraceTimer timer = TraceContext.newTimer("Loading account %s", who)) { |
| return accounts.get(who); |
| } |
| } |
| } |
| } |